[media] em28xx: Fix return value for s_ctrl

On some cases, driver returns 1. This should be OK, but qv4l2 is too
strict about return values.

Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

1 files changed, 1 insertions, 1 deletions

diff --git a/drivers/media/video/em28xx/em28xx-video.c b/drivers/media/video/em28xx/em28xx-video.c
index f34d524ccb09..1ddd3ee22812 100644
--- a/drivers/media/video/em28xx/em28xx-video.c
+++ b/drivers/media/video/em28xx/em28xx-video.c
@@ -1452,7 +1452,7 @@ static int vidioc_s_ctrl(struct file *file, void *priv,
                         rc = em28xx_audio_analog_set(dev);
                 }
         }
-        return rc;
+        return (rc < 0) ? rc : 0;
 }
 
 static int vidioc_g_tuner(struct file *file, void *priv,